氧芴三苯胺多枝分子的双光子吸收与电化学行为  

Strong Two-photon Absorption and Electrochemical Behavior of Dibenzofuran-triphenylamine Dentritic Chromophores

作　　者：张唯舟[1] 王筱梅[1] 方香云[2] 蒋宛莉[3] 赵俊芳[2] 

机构地区：[1]苏州大学材料科学与工程学院,苏州215021 [2]中国科学院理化技术研究所测试中心,北京100080 [3]山东大学晶体材料国家重点实验室,济南250100

出　　处：《高等学校化学学报》2008年第8期1616-1619,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:50273024,50673070);全国优秀博士论文作者专项基金(批准号:200333);苏州市国际合作项目基金(批准号:SWH0616)资助

摘　　要：研究了3个氧芴/三苯胺衍生物:E-2,8-双(4-二苯胺基苯乙烯基)氧芴(简称OT-G1)、E-2,8-双[4-(二苯基氨基-二苯乙烯基)(4′-溴苯基)氨基-苯乙烯基]氧芴(简称OT-G1.5)和E-2,8-双-[4′,4″-二-(二苯胺基苯乙烯基)-4-二苯胺基苯乙烯基]氧芴(简称OT-G2)的双光子吸收和电化学行为.研究结果表明,分子'代数'从1→1.5→2增高,氧芴三苯胺多枝分子的HOMO能级升高、双光子荧光强度和双光子吸收截面明显增大.由于HOMO能级的升高有利于分子的电荷转移,因而分子表现出强的双光子吸收能力,这表明可通过电化学行为来推断出分子的双光子吸收性能.The motivation for the strong two-photon absorbing chromophore is based on the significantly potential applications such as three-dimensional fluorescence imaging, two-photon photodynamic therapy, optical data storage and TPE fluorescence microscopy. Thus, the relationship between molecular structure and strong TPA property is greatly valuable. Here, two-photon absorption （TPA） and electro-chemistry properties of three new dibenzofuran-based ehromophores（named as OT-G1, OT-G1.5 and OT-G2） were investigated. Stronger two-photon fluorescence （TPF） and larger TPA cross-section were observed with the generation number increasing. It is interesting to find that the increasing of the HOMO energy level shows the contribution to enhancement of TPA cross-section.

关 键 词：氧芴三苯胺多枝分子 双光子吸收 双光子荧光 HOMO能级 

分 类 号：O644.1[理学—物理化学]